Motor-plow.



M. L. LETROTEUR.

MOTOR PLOW.

APPLICATION FILED DEC-1.15M?- Patented May 14, 1918.

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MOTOR PLOW.

APPLICATION FILED mzc.1. 1911.

Patented May 14, 1.918.

2 SHEETS-SHEET 2.

caused to enter the ground in the proper ative arrangement.

The accompanying drawings show dia- UNITED STATESPATENT orrion.

MAURICE LOUIS LETROTEUR, OF PARIS, FRANCE.

MOTOR-PLOW.

To all whom it may concern:

Be it known that I, MAURICE'LOUIS LE- TROTEUR, manufacturer, a citizen of the ReublicuofnFrance, of 7 Rue Montaigne,

aris, France, have invented new and useful Improvementsin Motor-Plows, of which ment of the character specified embodying "certainimprovements hereinafter fully described, in consequence whereof the disadvantages ordinarily involved in the types of motor plows in general use are completely overcome. According to the invention, the plow 1S constructed in such a way as to require a single driver only, in place of the two usually needed, and to enable the tilting to becarried up to within a few yards of the e e of the field, at the same time avoiding manner.

the necessity of the plow being turned at the: end of the field and the loss of time resultingtherefrom; the plowbeing always heldin working position, so the blades are The. invention resides in and has for its object the provision of these and other improved features, considered both structurally and from the standpoint of relgrammatically by way ofa purely demonstrative but by no means restrictive example guiding mechanism being i; su table manner.

a motor plow according to the present invention, neither the constructional details of the tractor proper, nor of the motor and shown, as they may beof any suitable type and do not present any novel features.

Figure l of the said drawings is a side elevation of the machine.

Fig. 2 is an end view thereof partly in verticalsection looking from the back, that I power transmitting and steering members which are not shown. A double steering arrangement is provided, also two seats located opposite to each other, the forward or backward movement being obtained in any Specification of Letters Patent.

Application filed December 1, 1917. Serial No. 204,876.

Suspended beneath the frame a is a swinging frame 0 to which there are fixed frames at carrying the shares and one of the side members of which is provided with a vertical extending rigid arm 0. The frame 0 is mounted upon a shaft 6 carried in two supporting arms f, f" which are mounted upon a divided shaft constituted by two short axles g, g carried in a line with each other in plumber blocks h, lb, depending from the main frame a to which they are fixed.

Fixed upon the axle g is a lever 71 which can be moved over a notched quadrant j and held in any one of the three positions I, II, III, Fig. 1, by means of a usual hand controlled spring pawl.

The lever z is cpnnected, by means of a link 7: which extends parallel to the arm f to which it is equal in length, to the arm c of the frame 0. The operation of the lever 2' in one direction or the other will consequently cause an oscillation, in the corresponding direction, of the swinging frame 0 in suchwise that the frames at carrying the plow blades will take up the positions II, 22, 33' corresponding respectively to the positions I, II, and III of the lever in question. i

In a bracket Z, fixed upon the main frame a there is supported and guided a screw m, provided with a hand wheel m" and working in a nut 0 Fig. 2, which is pivotally mounted at c in a fork a rigidly fixed to the swinging frame a. By manipulating the hand wheel m the driver of the machine can, therefore, lower or raise at will the'said frame and theplow blades so as to enable the plow to turn the earth over to the depth required. Due to the parallel arrangement and equality in lengths of the. link In and the arm 7, it will be apparent that the arm 0 of the swinging frame 0 always remains parallel to the hand lever i whatever position said lever may occupy. The consequent result is that the height or position of the shaft 6 in relation to the main frame a and to the fixed axle g, or in other words the earthing or unearthing of the plow, has no influence at all upon the inclination of the plow blades.

The operation of the improved machine is as follows a For purposes of transport the plow is horizontal, the lever z beingin the vertical position I whilethe swinging frame a with .For

the frames d and the plow blades occupy the position shown in full lines at Z, Z in Fig. l.

tilling when traveling forward, that is to say with the guiding wheel 6 tothe fore, the driver first of all earths the plow to the necessary depth by suitablymanipuby, means. of the screw m, to adjust the shaft 6 of lating the hand wheel m. so as,

the swinging frame. 0 to the height desired. He then pullsthe leverrl toward the position II until they nlow blades penetrate into the earth. .During thetravel of the.-.

" machine the leverxi'will theniautomatical'ly take up the position Hand-will lock the. I swinging frame and the plow blades in the position 2+2v corresponding thereto, thus consolidating the plow and the tractor and preventing any lack of striking or taking the earth on the part of the plow. y

For tilling when traveling backward the lever i is manipulatedin the reverse direction, toward position III, so as to cause the plow blades to easily effected by means'of the 'lever'c' in. 3

swinging frame 0 and the take up the position 3+3.

It will be observedv that the movement for again raising theblades of the plow, that is to saythe swinging of the frame'c', is very View of the fact that the two parts Eof the plow are balanced so that, consequently,

only the inertia of the members and thefric-J tion of. the earth upon the plow blades have to beovercome. If, however,;this manipulation should be. found too laborious screw gearing may be substituted for the lever in.

question. I It will be clear that, by removing the frames c'Iand d, the apparatus .will be transformedfinto an ordinary tractor suitable for all purposes.

Finally it will -be"readily understood that.

the invention is not strictly limited to the exact arrangement hereinbefore described 'andshown, by way of example,in the accompanying-drawings: but that, without .de-'

parting from the invention,'modifications may bemade in the constructional details of theapparatus and of its various members, orqcertain members may be replaced by equivalent mechanical devices. I Having now particularly described. and

ascertained the "nature of my said invention andi-n what .manner the same isto be performed I declare that what I claim is 1.: A motor plow comprisinga main frame forv carrying the motor mounted on wheels and adapted. to travel either forward or backward, a frame locatedbeneathiand articu'lated'to the main frame to swing vertis cally: in; either; direction, a" double swing plow carried by said frame to swingtherewith, and .a manipulating. lever connected :to

, saidzframe'.articulated'to efi'ectitsswinging movements whereby the driver cancause the plowi to'take up the positions requiredfor 'tilling both when traveling forward or backward.

2. A motor plow comprising a main frame for carrying the motor mounted on two main wheels and one guiding wheel and adapted to travel: either. forward'or backward, a double swing, plowsu'spended from said frame by means of an articulated swinging frame, and a manipulating IGVGIPCOHIIGGllGdQ.

to said frame whereby the driver. can cause theplow .to. take up the positions. a required:

for: tillingl' both when traveling forward" or.

backward.

- i 3. A motorplowicomprising a main frame for carrying the; motor. mounted: on, wheels andfiadapted totravel either .forwardior backward, a double. swing'plow suspended. from said frame means ofan articulated.- swingingframe, means for; vertical-1y. adjust;

ing the axis of. articulation offsaid swinging frame relatively tocsaidmain frame, and. a manipulatingv lever connected to said. frame whereby the driver can cause theplow. to:

take up the positions irequiredi for ti1ling both: when travelingforward vor backward; 4E. A motor \plow comprising a main:

frame for carrying the motor mountedon wheels and. adapted; to I travel either forward or.backward,a double swing plow suspended from said frame by means of an articulated swinging frame, a sc'rew mounted. to rotate;

but not move endwisein a bearing fixed; to

said mainframe-a pivoted nut .workingon.

said. screw and carried. by said swinging frame, av handv wheelson sald screw for. rotat-i ingxit inorder to 'verticallyadjusttthe axis I of articulation -.of said swinging frame rela-' tively tosaid main frame, and a manipulating lever connected to saidframewhereby thedriver can causetheplow to take upithe positions required for tillinga; both whentraveling forward orbackward; 1

- '5. A' motor plow comprising a main frame,

for carrying the motor andi mountedi on wheels, brackets depending from. said imain frame, a rock shaft mounted in saidbrackets, arms on said rock shaft, an axle carriedgby; said arms, a swinging. frame supportedion said axle, plow blades fixed on sai'd frame, a

6. A motor plow comprisinga main frame for carrying the motor-andnmounted onwheels, brackets: depending from i said imain frame, a rockshaft mounted. inlsaid brackets, arms on saidrock shaft, an axleicarried by said arms,.a swinging'framesupported on said axle, barsdetachably mounted in saidframe, earth tilling. tools fixed to said bars, a- 1 30 a hand lever on said rock shaft, an arm on said frame, a link connecting said arm to said i lever, said link corresponding in length and extendingparallel to said arms of said rock shaft, and means for holding said lever in any position to which it is moved in order to adjust said plow blade carrying frame.

y 1 n7. Amotor plow comprisin a main frame ,1 T1 o carrym the motor an mounted on wheels, brac ets depending from said main frame, a rock shaft mounted in said brackets,

l Copies of this patent may be obtained for move endwise in a bearing fixed to said main frame, a pivoted nut working on said screw and carried by said swinging frame, a hand wheel on said screwfor rotating it in order to vertically adjust the axis of articulation of said swinging frame relatively to said main frame, a hand lever on said rock shaft, an arm on said frame a link connecting said arm to said lever, said link corresponding in length and extending parallel to said arms of said rock shaft, and means for holding said lever in any position to which it is moved in grder to adjust said plow blade carrying rame.

MAURICE LOUIS LETROTEUR.

five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

